Mechanism for manufacturing rubber bathing-caps



R. E. RILEY.

MECHANISM FOR MANUFACTURING RUBBER BATHING CAPS.

APPLICATIONIFILED SEPT. 11, 1919. I

1, 852,3 3. Patented Sept. 7, 192a,

?Z/ 5 6b 5 7 v am UNITE STTES- PAT OFFECE.

RALPH EARL RILEY, 0F AKRON, OHIO, ASSIGNOR TO THE MILLER RUBBER COMPANY,

A CORPORATION OF OHIO.

MECHANISM FOR MAN UFACTURIN G RUBBER BATHING-CAPS.

Specification of Letters Patent.

Application filed September 11, 1919. Serial Ito. 323,096.

To all whom it may concern:

Be it known that I, RALPH EARL RILEY, a 1 citizen of the United States, and resident of Akron, ()hio, have invented certain new and useful Improvements in Mechanism for Manufacturing Rubber Bathing-Caps, of which the following is a specification.

My invention relates to improvements in the manufacture of rubber bathing caps and aims to provide means by which such articles may be made in a much more eXpedi-- gious and economical manner than heretoore.

The invention includes the novel process and means hereinafter described and particularly defined by the appended claims.

In order that my invention may be better understood I have appended hereto drawings, in which:

Figure 1 is a view of a sectional diagrammatic nature showing two superimposed rubber sheets upon a platenwith a cutting die in the position assumed after severing and uniting the edges of the blanks which form the body of the cap.

Fig. 2 is a perspective view showing the form of out which is made in the upper blank.

Fig. 3 is a View of a form of die and platen which I may conveniently use in applying *ered along the 'circular line of the cutter,

the head-band to the cap body.

Fig. 4 is a sectional view illustratilng the manner in which the die and platen bf Fig. 3 is used, and

Fig. 5 is a. view of the completed cap.

The particular form of cap to which the present invention relates is what is known as the sailor type. V

In proceeding according to my invention I place two superimposed sheets of unvulcanized rubber cap material, as indicatedat 1 and 2, upon a suitable platen 3 and subject such sheets to the action of a combined cutting and pressing die 4:, which has a blunt cutting edge of the shape clearly shown in Fig. 1. The pressure upon the die, which maybe secured in any suitable manner, as by a press ram, severs from the sheets two substantially circular blanks, indicated at 1 and 2*, on the drawings, and unites these together at their edges, the point of junction being indicated at a. The upper sheet 1 is then, after removal from between the die and platen, cut by any suitable means such as, for example, a pair of scis-.

'sors, to provide a slit or opening in the center preferably of cross or X-shape, as indicated at a, Fig. 2. A flat platen 5 of hard steel or other suitable material and of circular or disk shape is inserted through slit a so as to lie between the sheets 1 and 2 This platen has a central vertically extending dowel or guide pin 5 which is designed to cooperate with the central opening 6 of ahard steel cutting and joining die 6, which has an edge similar to the edge of the die 4 except that the long .bevel 1s reversely placed. This cutting die is of substantial cylindrical shape Patented Sept. 7, 1920.

and has at the proper distance from the cutting edge an annular rib or flange 6". An endless band 7 of rubber material which is designed to form the head-band of the cap is stretched over the outer surface of the die 6, its upper edge being brought into juxtaposition with the flange 6 which determines the width of the band, the lower edge of the band by reason of the stretching action projecting inwardly over the cutting edge of the die as indicated at 7. Pressure is now applied to the die to force the same down upon the platen with the result that the inwardly projecting portions 7 and also corresponding inwardly projecting portions of the blank 1* of the cap are sevahd simultaneously joined together. The ca is .now ready to be vulcanized in the usgal manner.

It will be understood that the parts of the I rubber sheets which are not designed to be thus joined together are dusted with amaterial such as powdered starch to prevent sticking;

The dies or platens or both may be heated in any suitable manner, if desired, to facilitate the operation.

The seam between the band 7 and the sheet 1 is inturned or faces inwardly and this leaves the exterior free from any projecting rib.

Having thus described my invention what I claim is:

1. Means for use in forming rubber bath ing caps comprising a fiat platen having a vertical stem, and a substantially cylindrical die having a guideway to receive said stem and a blunt cutting edge.

2. Means for use in forming rubber bathing caps comprising a flat platen having a vertical stem, and a substantially cylindrical die having a guideway to receive said stem ancl a blunt cutting edge, said die llEtY- ing an annular external guide flange 3. Means for use in forming" rubber bathing caps comprising a platen adapted to be inserted Within the rubber body blank to provide a cutting surface for the overlying rubber sheet, anrl'a cutting die of cylindrical form to receive a banrl of rubber on its cy lindr cal surface with a portion tl iereoi in" turned across the cuttting edge, and means for holding the die and platen in axial alinement during the cutting operation.

In testimony whereof, I affix my signature.

RALPH EAR-L RILEY. 

